The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-656-9987, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-656-9987 |
| Primary Part Number | 12414308-011 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Thread Series | M |
| Thread Pitch in Millimeters | 1.5 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 16.0 MILLIMETERS MM |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12414308-011 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12414308 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-656-9987 is a Nut,self-Locking,extended Washer, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-656-9987 has 1 manufacturer part number on file: 12414308-011 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12414308-011: Thread Series: M; Thread Pitch in Millimeters: 1.5; Thread Direction: RIGHT-HAND; Nominal Thread Size: 16.0 MILLIMETERS MM. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.